This standard USB to RS-232 Serial Adapter unit is compatible with most GPS and PDA devices including Garmin, Magellan, and Palm. Office equipment compatibility such as modems, printers, scanners, and digital cameras can use the USB to RS-232 DB9 short 8 inch cable. It features USB Plug and Play technology which allows easy installation and requires no IRQ, DMA, or I/O port resource configuration, it is USB 1.1 and 2.0 compliant. The USB to RS-232 Serial Adapter makes it possible for more single device connections attached to your system without the frustration of device and resource conflicts.